Sheet-steaming attachment for calendering-machines



(No Model.)

H. W. BOND, Jr., 86 J. A. DAMN'. SHEET STEAMING ATTACHMENT FOR OALENDERING MACHINES. No. 371,732.

Patented Oct. 18, 1887.

N. PETERS, Phom-Limngmpher, wasmngmn. D. C,

TUNTTnn PaTnNT Trace.

HENRY XV. BOND, JR., AND JAMES A. DAKTN, OF HOLYOKE, MASSACHUSETTS.

SHEET-STEAMING ATTACHMENT FOB CALENDERING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 371,732, dated @ctober 18, 1887.

Application tiled March 7, 1887.

To all whom it may concern:

Be it known that we, HENRY TV. BOND, Jr., and JAMns A. DAKIN, citizens of the United States, residing at Holyoke, in the county of Hampden' and State of Massachusetts, have invented new and useful Improvements in Sheet-Stcaming Attachments for Calendering- Machines, of which the following is a specification.

This invention relates to improvements in steaming attachnients for paper-calendering machines, the object being to provide improved devices for distributing steam under the sheetdelivering devices of said machines, whereby the frictional electricitywith which the paper becomes charged in passing through the calender is dissipated, and the adhesion of one sheet to the other, occasioned by the presence of said electricity, is prevented; and the invention consists in the peculiar construction and arrangement ofsaid steam-distributing devices, all as hereinafter fully described, and pointed ont in the claims.

Tn the drawings forming part of this speciiication, Figure l is a perspective viewof two of the lower rolls of a paper-calendering machine, together with certain of the sheet-delivery tapes and guide-rolls connected therewith, having applied thereto steam-dristributing devices constructed according to our invention. Fig. 2 is a side elevation, partly in section, of the steam-supply pipe and the steam-drum in which it is partially inclosed. Fig. 3 is a side elevation of one end of said steam-drum and of portions of the internal steam-supply pipe.

In the drawings, 3 and 4 indicate the rolls of the paper-calendering machine, and 5 the ordinary tapes between which sheets of paper pass as they emerge from between the rolls of the calender, which tapes and the rolls over which said tapes pass, as shown in Fig. 1, are arranged in the ordinary way. The said tapes 5 serve the purpose of conveying the said sheets of paper from the rolls of the calender onto any suitable table placed near the outer of said rolls.

. The abovereferred-to frictional electricity .with which the sheets of paper become more or less charged in passing through the calender occasions much inconvenience in placing Serial No. 229,918. (No model.)

and arranging the sheets in uniform position in a pile on said table on account of their adhesion one to another; but bysubmitting them to the action ofjets of steam, as below described, the said electricity-is dissipated, and by the within-described improved devices for conducting the steam under the said deliverytapes and there discharging it' all danger of the escape of water with the steam, whereby the paper would be wet and damage-d, is entirel y obviated.

A steam-supply pipe, 6, connected with any suitable steam-generator and having a stopvalve therein, as shown, extends parallel with said roll 3 under the tapes 5, as shown in the drawings, and has a series of perforations in its under side, as shown in Fig. 2, for the escape of steam. The perforated portion of the steam-pipe Gis inclosed in a cylindrical metallic case, 7, the upper side of which is provided with a series of pcrforations, as shown, i

to the cylinder to carry off any water of condensation that may gather in the latter.

In calendering paper it often occurs that the number of sheets being run through varies, and hence the superficial area against which steam is required to act is sometimes greater and sometimes less, and to provide for permitting more or less of the perforations in the cylinder 7 to discharge steam a cover or gate, l0, is arranged on one or both ends of the cylder, to slide over the perforations therein to cover or uncover certain vof them, said cover 10 having its borders engaging with the edges of suitable uptnrned strips secured on said cylinder, as shown.

In operating the above described papersteaming devices the steam from the supplypipe 6, escaping from the perforations in the under side thereof, is directeddownward within the cylinder 7, and hence any water that may be carried by the pipe 6 is prevented IOO from being thrown upward and through the perforations in the cylinder onto the paper; but said water, owing to the said inclined form of the under side of the cylinder, is quickly directed into the drip-pipe 9 and carried off, while the steam with which said cylinder is filled escapes therefrom through its perforations and rises upward against the paper, as aforesaid.

The supply-pipe 6 may, if desired, be connected simply to one end of the cylinder 7 without being extended therein, as shown; but

the distribution of steam is more uniform when arranged as shown in Fig. 2.

What we claim as our invention is- 1. Paper-steaming devices for calenderingmachines, consisting of a cylinder, as 7, having perforations in its upper side for the escape of steam, and having a drip-pipe connected thereto, combined with a steamsupply pipe, as 6, extending longitudinally within said cylinder and having perforations therein through which steam escapes, substantially as set forth.

2. Paper-steaming devices for calendering-- machines, consisting of a cylinder, as 7, having perforations in its upper side for the escape of steam, a sliding gate, as 10, covering more or less of said perforations, and a drippipe connected therewith, combined with a steam-supply pipe, as6, extending into said cylinder and having perforations in its under side through which steam escapes, substantially as set forth.

HENRY W. BOND, JR. JAMES A. DAKIN.

Vitnesses: v

WM. H. CHAPIN, G. M. GHAMBERLAIN. 

